Screw-gill drawing-frame



(No Model.)

No. 461,660. Patented et. 20, 1891.

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Nirnn STATES REUBEN ACKROYD, OF BRIDGEPORT, PENNSYLVANIA.

SCREW-GILL RAWING-FRAM E.

SPECIFICATION forming part of Letters Patent No. 461,660, dated October 20, 1891.

Application filed August 6, 1891.

To all whom, t may concer-n:

Be it known that I, REUBEN AcKRoYD, a citizen of the United States, and a resident of Bridgeport, Montgomery county, Pennsylvania, have invented certain Improvements in Screw-Gill Drawing-Frames, of which the following is a specification.

My invention consists of a certain improvement in what are known as screw-gill drawing-frames, the object of my invention being to so mount the apron used in connection with the upper drawing-roll that said apron can be readily moved out of the way when it is desired to gain access to the gills for cleaning the same.

In the accompanying drawings, Figure 1 is a longitudinal section of sufficient of a screwgill drawing-frame to illustrate my invention.

Fig. 2 is a front View of part of the same.-

Fig. 3 is a view similar to Fig. 1, but illustrating another method of carrying out my invention and Fig. 4 is a front View of part of the device shown in Fig. 3.

In Figs. 1 and 3, A represent a series of toothed bars or as they are termed gills, 7 which in the organized machine are caused to move slowly toward the drawing-rolls B B. by a suitable feed-screw A at each end, each gill when it `reaches the limit of its forward movement dropping into engagement at each end with a return-screw A2 and being thereby moved backward until it can be again raised into operative position at the rear of-'the advancing or acting set, the movements of the gills being indicated by the arrows in Figs. 1 and 3. 1n this class of machines the use of corrugated drawing-rolls of small diameteris advisable so as to permit the gills to approach close to the nip of the rolls, as shown, for by this means preliminary combing of the stock is rendered unnecessary, as the space between the gill-teeth and the nip of the rolls is so small as to prevent the formation of noils Hence there is not only a saving in stock but also a saving of the expense of combing the stock. By corrugating the rolls an extended grip on the sliver is insured and the small diameter of the rollsis thus compensated for.

In connect-ion with the upper roll B a belt or apron D should be employed, and this apron, if adapted to a fixed upper drum, would Serial No. 401,881. (No model.)

prevent access to the gills from the front of the machine for cleaning purposes, it being understood that the machines are frequently of such length that the gills at the central portion of the machine are not accessible from the ends of said machine. I therefore so mount the upper drum a, carrying the apron D, that the same'canbe swung down out of the way in order to permit the desired access 6o to the gills from the front of the machine. As shown in Figs. 1 and 2, said apron-drum a is carried at each end by a series of links b,

d, and f, the links b and d being jointed at lz and the links CZ andf at t" and the lower link f being hung to the frame of the machine at m, allof the joints being provided with suitable thumb-screws or equivalent means whereby they may be tightened and the structure thus rendered rigid when in the supporting 7o position shown by full lines in Figs. land 2. When, however, it is desired tol lower the upper drum and the apron, the joints are loosened so as to permit the links fvto swing downward and the others to move inrespect thereto, so that the apron and drum can be dropped out of the way-for instance, to the position shown by dotted lines in Fig. l.

In machines of excessive length, where the upper drum and apron are likely to be very 8o heavy, I prefer to adopt the construction shown in Figs. 3 and 4, in which case each end of the spindle of the upper drum is carried by a hanger n depending from a rod p, which is supported by the upper ends of opposite rack- 8 5 bars s, each meshing with a pinion t on a transverse shaft w, so that by turning this shaft the rack-bars can be raised and lowered so as to raise and lower the upper supportingdrum a of the apron, the depending hangers 9o n for said drum permitting the same to swing outward as it passes the drawing-rolls B B or other parts of the machine which would tend to obstruct its rise or fall if it were rigidly supported.

Having thus described my invention, I claim and desire to secure by Letters Pai ent- 1. The combination, in a screw-gill drawingframe, of the gills, the fluted drawing-rolls in front of the same, the upper drum, an apron passing around said drum and around the upper drawing-roll, and a movable support for front of the same, the upper drum, an apron passing around said drum and around the upper drawing-roll, rack-bars having depend ing hangers carrying said drum, and pinions meshing with said rack-bars to raise and lower the saine, substantially as specified.

In testimony whereof I have signed 1n y name t0 this specification in the presence of two subscribingr witnesses.

REUBEN ACKROYD.

Witnesses:

XVILLIAM D. OONNER, HARRY SMITH. 

